Android and iOS: Whether you're preparing for an emergency or in the midst of one, the Red Cross First Aid app overs plenty of knowledge. It'll help you get ready for a potential earthquake, handle a broken bone, survive a fire, and tons more.

The app features simple instructions for several types of incidents, checklists to help you prepare, and videos to show you what the included text can't. If the basic information isn't enough, most of the categories have a set of common questions and answers so you can find out more about a particular topic. While the app is never going to be a replacement for first-aid training, it's a good way to brush up on your emergency skills should an incident arise. It's one of those apps you'll hopefully never have to use, but may be glad to have if you encounter a worst-case scenario.